"I look forward to working with you," he said, trying to sound genuine.

I suppose this won't sound too genuine; but I'm sorry about your father.

His voice held a note of regret that sounded almost genuine.

The question appeared casual but the intention sounded genuine enough.

"The last thing we wanted to do was build these detention centers," he explained, trying to sound genuine.

But Jagger's reason for not wanting to do one sounds genuine.

He laughed again, this time the laughter sounded genuine she thought.

His mirth did not sound genuine either but that was understandable.

As you say, the letter, on the face of it, sounds genuine enough.

Forced a laugh that sounded more genuine than he felt.